1-Butanol → 4-(1H-pyrrol-3-yl)-7-{[2-(trimethylsilyl)ethoxy]methyl}-7H-pyrrolo[2,3-d]pyrimidine

Participants

Reaction Conditions

Reaction Steps

A 100 mL round bottom flask was charged with 4-chloro-7-{[2-(trimethylsilyl)ethoxy]methyl}-7H-pyrrolo[2,3-d]pyrimidine (1.00 g, 3.52 mmol), 1-butanol (25.0 mL), [1-(triisopropylsilyl)-1H-pyrrol-3-yl]boronic acid (1.41 g, 5.28 mmol), water (25.0 mL) and potassium carbonate (1.27 g, 8.8 mmol). This solution was degased 4 times, filling with nitrogen each time. Tetrakis(triphenylphosphine)-palladium(0) (0.41 g, 0.35 mmol) was added and the mixture was degased 4 times, filling with nitrogen each time. The reaction was stirred overnight at 100° C. and cooled to room temperature. The mixture was filtered through a bed of celite and the celite was rinsed with ethyl acetate (42 mL). The filtrate was combined and the organic layer was separated. The aqueous layer was extracted with ethyl acetate. The organic extracts were combined and concentrated under vacuum with a bath temperature of 30-70° C. to give the title compound 4-(1H-pyrrol-3-yl)-7-{[2-(trimethylsilyl)ethoxy]methyl}-7H-pyrrolo[2,3-d]pyrimidine. Yield: 83%; LC-MS: 315.2 (M+H)+.

Provenance & Evidence